# CVE-2003-0031: Memory corruption in n/a

> Attackers can cause a denial of service via buffer overflows in the libmcrypt library, affecting applications using this cryptographic library.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Jan 2003
- **Updated:** 8 Aug 2024
- **Also known as:** DEBIAN-CVE-2003-0031, GHSA-9m5c-xf3g-pwxw

## What is CVE-2003-0031?

CVE-2003-0031 is a high-severity memory corruption vulnerability in n/a, published on 15 Jan 2003. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple buffer overflows in libmcrypt before 2.5.5 allow attackers to cause a denial of service (crash).

## Which versions are affected by CVE-2003-0031?

It affects 1 product.


Products: Mcrypt Libmcrypt.

## How do I fix CVE-2003-0031?

Upgrade to a fixed version.

## Is CVE-2003-0031 being exploited?

There is no known exploitation of CVE-2003-0031 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2003-0032](https://insights.sbomify.com/CVE-2003-0032/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2003-0031 and fix it if it is affected.

What it is: CVE-2003-0031 is a high-severity memory corruption vulnerability in n/a, published on 15 Jan 2003. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2003-0031 in the wild and no public exploit code.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2003-0031/ (Markdown: https://insights.sbomify.com/CVE-2003-0031/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2003-0031
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2003-0031
- OSV: https://osv.dev/vulnerability/CVE-2003-0031

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From sbomify Insights: https://insights.sbomify.com/CVE-2003-0031/
Summaries are generated and may contain mistakes; the official description above is the record.